No on the gearbox question. Yes, Interpart was the hot ticket back in the '70's. Long gone now...

i dont need to change gear boxs do i


also has anyone heard of interpart suspension

As he said, your best bet is to get some '79-82 210 struts from the junkyard. They fit right on and new inserts are MUCH easier to get. You need to get the strut assembly, control arm, TC rod (the rod that goes to the core support), and steering links. It will all swap onto the 1200 if you use the 1200 springs and strut tops. HTH

do they bolt right up?

are you talking about a whole strut upgrade? well if you are i recommend b310 struts, they are a bit larger and have more strength, also have bigger brakes and take stronger springs i think. it dosent take much to put them in either.......210, is that b210 "120y"?

i am looking for stock replacement struts for my 1200 coupe I have tried most the part stores nere me ( autozone, napa, o'reillys and advance) none of them show availbilty for the cartridge. pep boys is the only plce that show avilibilty for the part. but they are 3 hours away from me. any info would be great. thanks